There are many colors in nature. But do you know if a color has weight? I think you’ll say “no”. But I am afraid you are wrong. If you don’t believe, you may do a small experiment.

First, put two objects with the same weight into two boxes. Then cover the box. Third, wrap one box with a red piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier.

Why do you think so? A scientist found that different colors have different weight in a man’s mind. So he did many tests and at last he got the result. That is to say, every color has its own weight in our mind and their order is the same. The heaviest color is red, then blue, green, orange, yellow and white.

The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for a kind of light with a certain wavelength. It reaches our brain through sense organs.

According to this discovery, scientists say that people accept the colors they like, and refuse the colors they hate. So your body and mind will be healthy by using the colors you like. Or you’ll be nervous or even get ill. For example, if you stay in a room with red windows, wallpapers and furniture for two hours, you’ll feel you have been there for four hours. But if the room is blue,? you’ll feel you have been there for only an hour. Another example, if a person walks out of a red room and into a blue room, his temperature will fall. That means our body temperature will change with different colors.

1.The purpose of the second paragraph is to tell us ___________.

A. a red box is heavier than a white one

B. a color has weight in one’s mind

C. white paper is lighter than red paper

D. you can know the weight of a color by holding it

2.Why did the scientist say colors have smell?

A. Because people can sense the light from colors.

B. Because we can smell colors with our nose.

C. Because every color has its own sweet smell.

D. Because every color can give off light of the same length.

3.It can be implied from the text that ___________.

A. colors have orders in weight

B. colors can change the weight of an object

C. people would stay longer in a room with red windows

D. colors can affect our mood and health

4.This passage is probably a ___________.

A. book review????????????? ????????????? B. fiction novel????????????? ????????????? C. fairy tale????????????? ????????????? D. science report

1.Tom needs to improve his study skills. If he takes the lessons, he has to spend ______.

A．$75              B．$100             C．$ 120             D．$ 135

2.If you want to build your vocabulary, you will take ________lessons.

A．37               B．43               C．60               D．70

3.The books in the picture are for ___________ to develop school skills.

A．students of lower grades

B．students of different levels

C．both parents and children

D．both teachers and students

Scientists are placing robotic dogs in the homes of lonely old people to test whether they can improve the quality of life for humans. Alan Beck, an expert(专家) in human-animal relationship, and Nancy Edwards, a professor of nursing, are leading the animal-assisted study on the effect of robotic dogs on old people’s depression (沮丧) , physical activity, and life satisfaction.

         In the study, the robot, called AIBO, is placed for six weeks in the houses of some old people who live alone. Before placing AIBO in the home, scientists will collect baseline data(数据) for six weeks. These old people will keep a diary to note their feelings and activity before and after AIBO. Then, the scientists will review the data to test if it has produced any changes in the life of its owner.

         “I talk to him all the time, and he responds to my voice,” says a seventy-year-old lady. “When I’m watching TV, he’ll stay in my arms until he wants down. He has his own mind.”

The AIBOs respond to certain orders. The scientists say they have some advantages over live dogs, especially for old people. Often the elderly are disabled and cannot care for an animal by walking it or playing with it. A robotic dog removes exercise and feeding concerns.

       “At the beginning, it was believed that no one would relate(与……相关) to the robotic dog, because it was metal and not furry.” Beck says. “Hopefully, down the road, these robotic pets could become a more-valuable health helper. They will record their masters’ blood pressure, oxygen levels or heart rhythms(心律). AIBOs may even one day have games that can help stimulate(刺激) older people’s minds.”

1.The purpose of Beck and Edwards’ study is to _____________.

A. understand human-animal relationship

B. make lonely old people’s life better

C. find the causes of old people’s loneliness

D. improve the animal-assisted research

2. In the research, the old people are asked to _____________.

A. note the activities of AIBOs

B. keep AIBOs at home for 12 weeks

C. record their feelings and activity

D. study the collected information

3.What does the underlined word “removes” mean?

A. moves again                   B. is movable         C. doesn’t need                      D. need

4.What is the better point of AIBO than live dogs?

A. It is easier to keep at home.

B. It can help the disabled people.

C. It responds to all the human orders.

D. It can watch TV with its owner.

5.The writer seems to suggest that the future robotic dogs may__________.

A. cure certain diseases                                                B. keep old people active

C. change people’s ideas                                                        D. look more like real dogs

—I can't decide which book to read.       —_________ you read the book review?

A. Why not       B. Let's               C. Why don't               D. Perhaps

 In “My purpose is to help you feel less stressed .” “to help you feel less stressed” is used as        .

A. subject        B. predicative    C. object       D. attributive